John m



John Tiemanf PATENTED "1355617 1867 @mhh faire 'tttmt @HinkeIMPROVEDToNeUs-surronr ron RAI'tRoAD sinistri-cass,

tte rlgmle nitrati tu it tigre ettrt .ttmt rut 'mating nrt the timePennsylvania, have invented a new and useful Machine for Supporting' theTongues of Street-0ars and other Vehicles or Machines; and I do herebydeclare that the following is affoll, clear, and exactdescripticn of theconstruction and operation of the same, reference being hadv to ltheaccompanying drawings, making a-part of this specification, in whichv'Figure 1 is a perspective view of the machine, as it appears when thecurved bar Qis elevated, attached to the tongue of a street-car inmotion. v

" Be it known that I, JOHN M. TIEnNAN,..ot` Pittsburg, in the county ofAllegheny, and Commonwealth of Figure v2 is a perspective view of themachine, as it appears attached to a tongue separated from a car,

with the curved b ar C depressed. I

Figure 3 is a rear perspective Iview, showing only a part of the curvedbar C and the-rear of vthe' tongue.

Figure 4 is a rear plane view of the curved bar C and lever D. l nFigure 5 is a side plane view of the curved bar C and lever D. Figures 6and 7 are transverse sectional views; ,and v Figure 8 is a-view ofthespring-bolt, uncovered; l

In the drawings, A represents merely the covering-cylinder of thespring-bolt B. B ijs the spring-bolt.

- C is :the curved'or bent metallic bar or rod. D is the lever, fastenedto the curved or bent bar. i E is the tongue of a car or vehicle.l F arethe bearings, which support the curved bar. H is the spiralspring,encircling the curved bar, in fig. 7.A J is a pin or screw, in gs. 3and. K is a pin or-screw, in iig. 7; and L is' a short bar or bolt, infig. 'i'.

lconstruet my machine by taking abar or rod of iron, or' other metal, ofa suitable length, and of -a proper diameter or thickness,say one inch,and bend the same into the shape -and curve shown n'the drawings,

as letter C, and firmly faste thereto, in such place on said bar as-thatwhen in position vit w'ill come closeup tothe tongue E, a flat metal baroilever, D, sui'eiently long to strike against thespring-'bolt B, andthen pass the said curved bar through the bearings F F, which have'beenrst iirmly fastened to the tongue E, preventing the' said curved barfrom moving or being jerked out of the said bearings by fastening a pinor screw, J, in the said bar, on the outside of but close tothe bearingsfarthest from the lever D, using a spring-bolt, B, to keep the bar inthe desired position.

By this inode ofconstruction, the curved barC is not intended toihave'any, or, if any, a very-slight,-lateral motion, butthe spring-bolt B isdrawn lawayfrom or thrown out in front of the leverD, so that the lattermoves backwards or forwards, close to the tongue E. I 'l I alsoconstruct my' machinein a manner similar to that before. described,omitting the spring-'bolt B, and the pi nor screw'J', but using'a spiralspring, H, around the curvedbar G, under the tongue E, preventing thevsaid bar from .coming out of the bearings bynputting a, pin or screw invsaid bar at K, and fasteninga short bar or bolt of iron, L, projectingalittle beyond the tongue, 'on the top of the tongue, against which torest the lever D. This as shown in iig. 7. By this constructionthecurvedbar C has a lateralmotion sufficient to permit the lever D to escape thebar or bolt'L, against which it is thrown. i l l The principle of theoperation aftereitber mode of construction, is the elevation ordepression of the curved bar C by means of a lever, D, attached'to thesaid bar, and resting against a bolt above, whether the latter be aspring-bolt, as B in fig. 6, or a. bolt immovablyfastened to the tongue,as L in tig. 7. I voperate the machine, when'the curved bar is elevated,as in iig. 1, by drawing the spring-bolt B far enough back to escape thelever D, when the said bar will fall of its own weight, carrying thelever D back behind the bolt B, whichis then permitted to fly out; andthe tongue being detached from the car, its weight falling on the curvedbar C, causes the lever D to be thrown forward against the saidsprin'g-bolh'and the curved bar is thus kept in a depressed position,withits ends resting on the ground, to carry the tongue.

When the tongue is again attached to the car, the curved bar C beingdepressed, as in fig. 2, the springbolt B is drawn' back far enough toescape the lever D, and the curved bar being then lifted up, the saidlever passes in front of the spriugbolt, which is then permitted to ilyback, and the said lever, resting against its front, holds up-the curvedbar C, as in Iig. 1. l I v Claim.

What I claim as my invention, and E'desire to secure byfLetters Patent,is

The mode of supporting the tongues of streetcars and other vehicles ormachines while the same are being moved from place to piace, or changedfrom one, end of a car to theotheif, by the use of a curved o1` bentmetallic bar or rod, attached to or swung under the tongue, togetherwith the mode of operating the saidbnr by a. lever fastened theretoacting against a bolt fixed to the tongue over the said bar, as the sameis hereinabove described.

' .JOHN M. TIERNAN.

Witnesses:

MALCOLM HAY, Cms. A. MILLER.

